TW201441511A - Release device of electric push lever - Google Patents

Abstract

The present invention provides a release device of electric push lever, wherein the electric push lever is configured with a telescopic tube unit capable of performing a linear displacement. One side of the telescopic tube unit is configured with a connecting portion, and a release device is connected between the telescopic tube unit and the connecting portion. One side of an engagement sleeve provided by the release device is connected with the telescopic tube unit, and the other side of the engagement sleeve is fitted with a fixing sleeve connected with the connecting portion. The side edge of a clutch collar fitted onto the engagement sleeve is configured with a plurality of engagement teeth which are engaged with the surrounding teeth on the outer periphery of the fixing sleeve so as to form an engagement positioning. The inner wall of an abutting collar located on the rotating member fitted onto the fixing sleeve is configured with a pushing portion, which may be pushed on the abutting collar to rotate and push the pushing portion against the corresponding moving portion on the outer periphery of the clutch collar for performing an axial displacement, and also separate the engagement teeth of the clutch collar from the surrounding teeth of the fixing sleeve to form a released state, such that the telescopic tube unit may perform an operation of reducing displacement by manual rotation during power failure or malfunction.

Description

Electric push rod release device

The present invention provides a release device for an electric push rod, in particular, a telescopic tube set on the electric push rod and a joint portion at one side of the telescopic tube set are coupled with a release device, which can be pulled outside the fixed sleeve. The sleeved rotating member rotates and pushes the axial displacement of the clutch sleeve that is sleeved outside the engaging sleeve, and simultaneously separates the clutch sleeve from the fixed sleeve to form a release state, so that the telescopic tube group has no power or failure. The manual rotation can be used to shorten the displacement.

According to the current use of putter devices, the different types of pusher devices have different mechanisms of design and transmission, and can be applied to electric beds, massage chairs, fitness and rehabilitation related equipment, and generally During the power transmission of the motor, the push rod device can drive the telescopic displacement of the extension sleeve, so that the electric bed or the massage chair can be adjusted for high and low position. When an emergency occurs, the user can operate the clutch structure inside the push rod device or The device releases and rapidly lowers the connecting rod or bracket of the lifting mechanism that is coupled to the extension sleeve, but the conventional clutch structure or device is completely released, and the push rod device is used during the moment of falling. The person feels uncomfortable, or the item is damaged due to excessive impact and collision force and is quite dangerous.

Please refer to the twelfth figure, which is a perspective exploded view of the conventional release mechanism. It can be clearly seen from the figure that the first sleeve A and the push rod device D can be screwed (not shown). The extension sleeve D1 that drives the telescopic displacement is butt-joined, and the second sleeve B is locked to the connection portion D2 that can be connected with an external device (such as an electric bed, a massage chair, etc.), and then the second The other side of the sleeve B is sleeved on the first sleeve A, and the second sleeve B is combined with the collar C1 of the clutch module C and the first dial C2 which can be pivotally connected to each other. The second dial C3, when the user is not released on the second dial C3, the two convex portions C11 at the inner wall surface of the collar C1 and the concave portion D11 on the outer surface of the extension sleeve D1 are mutually engaged, so that the extension sleeve is The tube D1 can drive the connecting portion D2 to push the external device for lifting height or different angle adjustment.

When the clutch module C is released, the two convex portions C11 of the collar C1 can be separated from the concave portion D11 of the extension sleeve D1, and the extension sleeve D1 can be pushed by the gravity of the external device along the screw. Reverse the shortening displacement, so that the external device drops rapidly. However, when the user or the item carried on the external device is heavy, the reverse displacement is pushed on the extension sleeve D1, and the overall instantaneous speed is reduced. Fast, the user will be shocked and affect the current mood, and even have doubts about the safety of use, or damage caused by excessive impact or collision, causing serious loss or injury to the user's life and property. , those who are still in the industry to redesign to effectively solve.

Therefore, the inventor, in view of the problems and shortcomings of the use of electric push rods, has collected relevant data through multiple assessments and considerations, and has continuously tried and modified the years of research and development experience in this industry to design the release of such electric push rods. The invention of the device was born.

The main purpose of the present invention is to provide a telescopic tube set which is linearly displaceable toward the outside of the seat body, and a connecting portion is provided at one side of the telescopic tube set, and the telescopic tube group and the connecting portion are combined. There is a release device, and the release device has a coupling sleeve at one side for bonding a telescopic tube set, and a fixing sleeve coupled to the connecting portion is sleeved on the other side of the connecting sleeve, and the side of the clutch sleeve that is sleeved outside the connecting sleeve is provided with the outer ring of the fixing sleeve The ring tooth portion on the surface forms a plurality of latching portions of the clamping positioning, and an urging portion is provided at the inner wall surface of the mating collar of the rotating member that is sleeved outside the fixing sleeve, so as to be pulled on the butt collar The top pushing portion is rotatably pushed to the axial direction of the corresponding pushing portion on the outer ring surface of the clutch collar, and the toothed portion of the clutch collar is separated from the ring tooth portion of the fixed sleeve to form a release state for The telescopic tube set can be manually rotated to reduce the displacement when there is no power or fault.

The secondary object of the present invention is that when the user pulls on the rotating member of the release device, the pushing portion of the butt collar can be rotated and pushed onto the corresponding pushing portion of the clutch collar along the guiding surface. Sliding displacement, and at the same time, the convex rail and the sliding groove at the joint surface of the coupling sleeve and the clutch collar are mutually engaged with each other, so that the pushing portion of the clutch collar can only be axially displaced after being pushed by the top, and The plurality of elastic members that the clutch collar abuts against the engaging sleeve have appropriate elastic resistance to avoid axial displacement caused by the clutch collar being affected by an external force.

Another object of the present invention is that during the rotation of the rotating member, the abutting portion at the inner wall surface of the butt collar is located in the slot between the adjacent moving portions of the clutch ring, and is to be rotated. The abutting portion of the butt collar is held by the side of the spacing groove to the other side wall surface, thereby limiting the predetermined angle and distance range when the butt ring is rotated, so as to prevent the pushing portion of the butting collar from being separated from the pushing portion The failure caused by the shifting portion of the clutch collar occurs.

A further object of the present invention is to separate the toothed portion of the clutch collar from the ring tooth portion of the fixed sleeve when the user repeatedly pulls and releases the rotating member, or the elastic member of the engaging sleeve The elastic support is axially displaced to the original position on the clutch collar and then meshed with each other to form a clamping position, and the pushing portion of the rotating member slides against the guiding surface of the clutch sleeve pushing portion The rotation is reversed to the original position, thereby achieving an adjustment of the predetermined release speed of the release device for the weight of the human body or the article, and has the effect of easy operation.

Another object of the present invention is that the release device is coupled between the telescopic tube set of the electric push rod and the connecting portion, and does not occupy the space inside the electric push rod, and does not need to change the original electric push rod specification or The development of different size molds, the overall volume is reduced and more compact, so that the modular structure of the release device can be applied not only to the electric push rods in use or different types, but also to effectively reduce the mold design. And manufacturing difficulties and costs, more competitive products.

1‧‧‧Electric putter

10‧‧‧ accommodating space

11‧‧‧

111‧‧‧ Gear Set

12‧‧‧ Drive Department

121‧‧‧Motor

122‧‧‧Drive shaft

13‧‧‧Transmission mechanism

131‧‧‧ lead screw

14‧‧‧Flexible tube set

141‧‧‧ Telescopic casing

142‧‧‧ screw joint

143‧‧‧Outer casing

15‧‧‧Connecting Department

16‧‧‧ Positioning Department

2‧‧‧ release device

21‧‧‧Connecting sleeve

211‧‧‧Join hole

212‧‧‧ sockets

2121‧‧‧ shaft column

2122‧‧‧ friction plate

213‧‧‧ convex rail

214‧‧‧Flexible components

22‧‧‧Fixed sleeve

221‧‧‧ Ring tooth

23‧‧‧Clutch collar

231‧‧‧Chute

232‧‧‧ teeth

2321‧‧‧stop surface

2322‧‧‧Resistance

233‧‧‧Move

2331‧‧‧ Guide surface

234‧‧‧ spacing slot

24‧‧‧Rotating components

241‧‧‧Docking collar

242‧‧‧Pushing Department

243‧‧‧Resistance Department

244‧‧‧Turning Department

A‧‧‧first sleeve

B‧‧‧Second sleeve

C‧‧‧ clutch module

C1‧‧‧ collar

C11‧‧‧ convex

C2‧‧‧ first dial

C3‧‧‧second dial

D‧‧‧Pushing device

D1‧‧‧ Extension sleeve

D11‧‧‧ recess

D2‧‧‧Connecting Department

The first figure is a three-dimensional appearance of the present invention.

The second figure is a perspective exploded view of the present invention.

The third figure is an exploded perspective view of the release device of the present invention.

The fourth figure is an exploded perspective view of another perspective of the release device of the present invention.

Figure 5 is a side cross-sectional view of the present invention.

Figure 6 is a perspective cross-sectional view of the present invention.

Figure 7 is a partial side view of the release device of the present invention before it is pulled.

Figure 8 is a perspective cross-sectional view of the release device of the present invention before being pulled.

The ninth diagram is a partial side view of the release device of the present invention after being pulled.

The tenth figure is a perspective sectional view of the release device of the present invention after being pulled.

Figure 11 is a side cross-sectional view of a preferred embodiment of the present invention.

The twelfth figure is an exploded view of the conventional release mechanism.

In order to achieve the above objects and effects, the technical means and constructions of the present invention will be described in detail with reference to the preferred embodiments of the present invention.

Please refer to the first to sixth figures, which are respectively a perspective view of the present invention, an exploded perspective view, an exploded perspective view of the release device, and an exploded perspective view, a side cross-sectional view and a perspective sectional view of the release device. As is clear from the figure, the present invention includes an electric push rod 1 and a release device 2, so the main components and features of the present invention are detailed as follows: wherein the electric push rod 1 has a body 11 and The accommodating space 10 in the interior of the base 11 accommodates a gear set 111. The base 11 has a driving portion 12 with a motor 121 coupled thereto, and the motor 121 has a side extending into the seat body 11 and meshing with the gear set. The drive shaft 122 is driven by a rotation, and the transmission mechanism 13 is connected to the gear set 111. The transmission mechanism 13 has a drive shaft 122 perpendicular or parallel to the motor 121 and can be driven by the gear set 111. The lead screw 131 is rotated, and the telescopic tube set 14 is linearly coupled to the lead screw 131 for linear transmission displacement, and the connecting portion 15 of the telescopic tube set 14 of the electric push rod 1 is provided. And located at the other side of the seat body 11 relative to the telescopic tube set 14 A positioning portion 16.

Furthermore, the above-mentioned telescopic tube set 14 has a telescopic sleeve 141, a screwing portion 142 (shown in FIG. 5) and an outer sleeve 143, and is screwed by a screwing portion 142 provided at one side of the telescopic sleeve 141. The outer sleeve 143 is sleeved on the lead screw 131, and the outer sleeve 143 is sleeved for linear displacement displacement of the telescopic sleeve 141 with respect to the lead screw 131. However, the specifications of the manufacturers of the electric push rod 1 are not Same, and because of the electric push rod There are many ways to design a structure, and it can be changed according to the actual application. Therefore, it is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the patent application of the present invention. The equal changes and modifications made in the spirit of the art should be included in the scope of the patent of the present invention and combined with Chen Ming.

The release device 2 is coupled between the telescoping tube set 14 and the connecting portion 15 of the electric push rod 1 and includes a connecting sleeve 21, a fixing sleeve 22, a clutch collar 23 and a rotating member 24, wherein the connecting sleeve The sleeve 21 is provided with an engaging hole 211 which is coupled to the telescopic sleeve 141 of the telescopic tube set 14 and is sleeved at the other side of the engaging sleeve 21 for the movable sleeve to be sleeved. The hole 212, and the fixing sleeve 22 is coupled to the connecting portion 15, and the bottom of the sleeve hole 212 of the engaging sleeve 21 is protruded from a shaft column 2121, and the shaft column 2121 is sleeved with two mutually resisting contacts. The friction plate 2122 is provided with an annular convex 213 and a plurality of elastic members 214 located between the adjacent convex rails 213 on the outer ring surface of the engaging sleeve 21, and then disposed on the outer ring surface of the fixing sleeve 22 There are a plurality of ring teeth 221 arranged in a ring shape.

However, the above-mentioned clutch collar 23 is sleeved on the outside of the engaging sleeve 21, and a plurality of sliding slots 231 for the male rail 213 to be inserted into the ring are arranged annularly at the inner wall surface of the clutch collar 23, and the clutch collar 23 is arranged. The plurality of latching portions 232 are arranged in an annular shape at the side of the front side of the sliding slot 231, and the engaging portion 232 is engaged with the corresponding ring-shaped portion 221 of the fixing sleeve 22 to form a locking position, and is formed in the engaging portion. a stop surface 2321 having an inwardly turned section difference and a tapered resisting surface 2322 extending obliquely outward from the stop surface 2321 are formed in sequence at the side of the 232; and the outer ring surface of the clutch collar 23 is further formed on the outer ring surface The plurality of spaced grooves 2 are formed by one or more annularly arranged push portions 233 and between adjacent push portions 233 34, and an inclined guiding surface 2331 is formed at a front side of the pushing portion 233; further, the rotating member 24 is sleeved outside the fixing sleeve 22, and has at least one butt collar 241 for pulling Wherein the inner wall surface of the butt collar 241 is provided with one or more annularly arranged pushing portions 242, and the pushing portion 242 is abutting against the corresponding pushing portion 233 of the clutch collar 23, and the rotating member 24 is The butting collar 241 is disposed between the adjacent sliding portions 233 and is provided with a resisting portion 243 located in the spacing groove 234, and the outer ring surface of the butting collar 241 is formed with a wave shape, a convex tooth shape or a continuous step shape. The portion 244 is pulled.

In addition, the engaging sleeve 21 of the release device 2 of the present invention is sleeved on the outside of the telescopic sleeve 141 of the telescopic tube set 14 of the electric push rod 1 and is fixed by a positioning pin (not shown). The method is integrated into a single body, and the fixing sleeve 22 and the connecting portion 15 can be combined and fixed by means of positioning pins after being sleeved, but in actual application, the key and the keyway, the threaded joint and the welding can also be used. The fastening member 24 is assembled in a fixed manner, and the rotating member 24 is preferably configured to include two butting collars 241, and the connecting faces of the two butting collars 241 are provided with a plurality of protruding pillars and concave holes which are mutually embedded (in the figure) Not shown), and then combined by means of screw locking.

Please refer to the seventh to eleventh drawings, which are respectively a partial side view, a three-dimensional sectional view, a partial side view after pulling, a three-dimensional sectional view and a side view of the preferred embodiment before the release device of the present invention is pulled. The cross-sectional view, as can be clearly seen from the figure, the release device of the electric push rod of the present invention is applied to a connecting rod or bracket of an external device (such as an electric bed, a massage chair, etc.), a lifting mechanism or other related device or device, The connecting portion 15 and the positioning portion 16 at the two sides of the electric push rod 1 can be integrally integrated with the connecting rod or the bracket by screwing, and the releasing device 2 is the telescopic tube set 14 coupled to the electric push rod 1. Between the joint portion 15 and not occupied The space inside the electric push rod 1 does not need to change the specifications of the original electric push rod 1 or develop different sizes of molds for the whole, so that the overall size is further reduced, so that the modular design of the release device 2 can be applied not only to the structure. It can also reduce the difficulty and cost of mold design and manufacturing by using the electric push rod 1 in use or in different types.

Since the elastic members 214 of the connecting sleeve 21 of the release device 2 are inwardly engaged with the corresponding limiting holes (not shown) on the rear side wall surface of the clutch collar 23, the elastic member 214 can elastically support the clutch. The collar 23 of the clutch ring 23 is formed such that the corresponding toothing portion 221 of the clutch sleeve 23 is axially engaged with the corresponding ring tooth portion 221 of the fixing sleeve 22, and the inward turning portion of the side of the engaging portion 232 is in a difference. The blocking surface 2321 is rotatably fastened to the ring tooth portion 221, and the clutch collar 23 can no longer be rotated axially. The plurality of convex portions at the interface between the engaging sleeve 21 and the clutch collar 23 can also be utilized. The movable clamping of the rail 213 and the sliding slot 231 does not cause axial rotation and has a good braking effect, and at the same time, the telescopic tube set 14 combined with the engaging sleeve 21 can no longer be rotated, and can be driven by the motor 121 of the driving portion 12. The gear set 111 meshing on the driving shaft 122 rotates, and the gear set 111 drives the lead screw 131 of the transmission mechanism 13 to rotate and push the telescopic tube set 14 toward the outside of the seat body 11 to linearly extend or shorten the displacement. And interlocking with the connecting portion 15 to push the external device (not shown) for raising and lowering Or different angles of adjustment.

When the present invention is used, it is firstly pulled on the pulling portion 244 of the rotating member 24 of the releasing device 2, and the butting collar 241 is rotated at an angle in the clockwise direction, and the pushing portion 242 is rotated. The corresponding pushing portion 233 of the movable collar 23 is slidably displaced along the guiding surface 2331, and the convex rail 213 and the sliding slot 231 at the abutting surface of the engaging sleeve 21 and the clutch collar 23 are mutually engaged. Card, the shifting portion 23 of the clutch collar 23 3, after being pushed by the top, can only be axially displaced toward the telescopic tube set 14 of the electric push rod 1, and the plurality of elastic members 214 that are resisted on the engaging sleeve 21 are elastically deformed, and have appropriate elastic resistance. It is avoided that any axial sliding displacement occurs when the clutch collar 23 is affected by an external force.

When the pushing portion 242 of the rotating member 24 is rotated and pushed against the pushing portion 233 of the clutch collar 23 along the guiding surface 2331, the engaging portion 232 of the clutch collar 23 can be gradually separated from the fixing sleeve 22 . The corresponding ring tooth portion 221 is in a released state, and since the clutch collar 23 is not subjected to the clamping of the fixing sleeve 22, when the external device is pushed against the connecting portion 15 by the influence of its own weight or external force, The fixing sleeve 22 can be pushed up to the engaging sleeve 21, and the screwing portion 142 at the side of the telescopic sleeve 141 can be shortened along the lead screw 131 so that the telescopic tube set 14 of the electric push rod 1 is When there is no power or fault, the manual rotation can be used to shorten the displacement, thereby providing an emergency situation, so that external devices (such as electric beds, massage chairs, etc.) can be adjusted to reduce the speed, thereby improving the overall use. safety.

During the rotation of the rotating member 24, the abutting portion 243 at the inner wall surface of the other butting collar 241 is located in the spacing groove 234 between the adjacent moving portions 233 of the clutch collar 23. After the abutting portion 243 of the butting collar 241 is held by the side of the spacing groove 234 to the other side wall surface, the predetermined angle and distance range when the butting collar 241 is rotated can be restricted to prevent docking. When the pushing portion 242 of the collar 241 is disengaged from the failure caused by the pushing portion 233 of the clutch collar 23, when the user pulls and releases the rotating member 24 a plurality of times, the engaging portion of the clutch collar 23 can be made. 232 is separated from the ring tooth portion 221 of the fixed sleeve 22, or the elastic member 214 of the engaging sleeve 21 is elastic After the axial displacement of the clutch collar 23 to the original position, the meshing position is engaged to form a clamping position, and the pushing portion 242 of the rotating member 24 slides along the guiding surface 2331 of the moving portion 23 of the clutch collar 23 to resist displacement. The rotation is returned to the original position, and the adjustment of the predetermined release speed of the release device 2 according to various uses and places of use can be achieved for the weight of the human body or the article, and the operation is simple.

The above detailed description is intended to be illustrative of a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and other equivalents and modifications may be made without departing from the spirit of the invention. Changes are intended to be included in the scope of the patents covered by the present invention.

In summary, the above-mentioned electric push rod release device of the present invention can achieve its efficacy and purpose when used, so the invention is an invention with excellent practicability, and is in fact conforming to the application requirements of the invention patent, and is proposed according to law. To apply, I hope that the trial committee will grant this case as soon as possible to protect the inventor's hard work. If there is any doubt in the bureau, please do not hesitate to give instructions, the inventor will try his best to cooperate, and feel really good.

1‧‧‧Electric putter

10‧‧‧ accommodating space

11‧‧‧

111‧‧‧ Gear Set

12‧‧‧ Drive Department

121‧‧‧Motor

122‧‧‧Drive shaft

13‧‧‧Transmission mechanism

131‧‧‧ lead screw

14‧‧‧Flexible tube set

141‧‧‧ Telescopic casing

143‧‧‧Outer casing

15‧‧‧Connecting Department

16‧‧‧ Positioning Department

2‧‧‧ release device

21‧‧‧Connecting sleeve

212‧‧‧ sockets

2121‧‧‧ shaft column

2122‧‧‧ friction plate

213‧‧‧ convex rail

214‧‧‧Flexible components

22‧‧‧Fixed sleeve

221‧‧‧ Ring tooth

23‧‧‧Clutch collar

231‧‧‧Chute

232‧‧‧ teeth

233‧‧‧Move

234‧‧‧ spacing slot

24‧‧‧Rotating components

241‧‧‧Docking collar

242‧‧‧Pushing Department

243‧‧‧Resistance Department

244‧‧‧Turning Department

Claims (8)

The utility model relates to a release device for an electric push rod, which comprises an electric push rod and a release device, wherein: the electric push rod has a gear set inside the seat body for receiving a gear set which is driven by the driving part, and is connected with the gear set. The transmission mechanism of the lead screw has a telescopic tube set linearly displaced toward the outside of the seat body, and a connecting portion is arranged at one side of the telescopic tube set; the release device is a telescopic tube coupled to the electric push rod Between the group and the connecting portion, and including a connecting sleeve, one side of the connecting sleeve is coupled to the telescopic tube set, and the other side of the engaging sleeve is sleeved with a fixing sleeve coupled to the connecting portion, and The outer ring surface of the fixing sleeve is provided with a plurality of ring tooth portions, and at the side of the clutch sleeve which is sleeved outside the connecting sleeve, a plurality of toothed portions which are engaged with the ring tooth portion to form a clamping position are provided, and the clutch is engaged The outer ring surface of the collar is provided with one or more pushing portions, and the outer portion of the fixing sleeve is sleeved with a rotating member, at least one butt ring for pivoting at an angle, and the butt sleeve One or more rotating pushers at the inner wall of the ring Axial displacement of the clutch collar and the collar portion of the passage on the teeth of the teeth portion and the fixed portion of the sleeve is formed of separate urging portion. The release device of the electric push rod according to claim 1, wherein the motor of the electric push rod driving portion has a driving shaft that is meshed with the gear set, and the telescopic tube group has a telescopic tube. The sleeve is screwed to the lead screw of the transmission mechanism by a screwing portion provided at one side of the telescopic sleeve, and the outer sleeve is sleeved outside the telescopic sleeve. The release device for an electric push rod according to claim 1, wherein one side of the engaging sleeve of the releasing device is provided with an engaging hole that is combined and positioned on the telescopic tube set, and is on the other side of the connecting sleeve. A socket for the movable sleeve of the fixed sleeve is arranged, and a shaft column protrudes from the bottom of the sleeve hole. The release device of the electric push rod according to claim 1, wherein the outer ring surface of the engaging sleeve of the releasing device is provided with a plurality of annular rails arranged in an annular shape and between the adjacent convex rails and elastically supported. A plurality of elastic elements on the clutch collar, and a plurality of chutes for engaging the convex rails on the inner wall surface of the clutch collar. The release device of the electric push rod according to the first aspect of the invention, wherein the side of the engaging portion of the clutch ring of the release device is inwardly formed with a ring tooth portion that is rotatably fastened to the fixed sleeve The differential section of the turning section. The release device of the electric push rod according to the first aspect of the invention, wherein the side of the pushing portion of the release sleeve of the release device is a push-up portion formed by a pushing portion for the rotary member to make the tooth portion Forming a separate oblique abutting surface with the ring tooth portion of the fixed sleeve. The release device of the electric push rod according to the first aspect of the invention, wherein the plurality of urging portions of the release sleeve are arranged in a ring shape, and a plurality of spaced grooves are formed between adjacent ones. The adjacent moving portions of the butt collar are provided with a resisting portion in the spacing groove that limits the predetermined angle and distance range of the pushing portion of the butting portion to the moving portion of the clutch collar. The release device of the electric push rod according to claim 1, wherein the plurality of pushing portions on the butting collar of the rotating member of the releasing device are arranged in an annular shape, and the outer ring surface of the butt collar is formed. There are wavy, convex-tooth or continuous segments of the pull.